IEO is a kind of ICO evolution. But I don't think they are safer than ICO. How a working product will create a project team depends only on the team. The problem is that at the HYPE, many overtly weak projects collect the necessary money, but then do not create anything. And the goal of many projects is simply to raise money and then create the appearance of work. There are very few working projects now. Even in the top 10 cryptocurrencies, not all projects have a fully functional product.